Aepoalua Reservoir Reservoir Report
Nearby: Aepoekolu Reservoir Aepo Reservoir
Last Updated: December 19, 2025
Aepoalua Reservoir, located in Kauai, Hawaii, was completed in 1915 and serves as an essential water source for irrigation purposes in the region.
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Summary
With a dam height of 33 feet and a storage capacity of 131 acre-feet, this earth dam structure plays a crucial role in supporting agricultural activities in the area. The reservoir covers a surface area of 7.2 acres and has a drainage area of 0.08 square miles, indicating its importance in water management and conservation efforts.
Despite its age, Aepoalua Reservoir has been regularly inspected, with the last assessment conducted in November 2019, revealing a fair condition assessment. The reservoir is classified as having a high hazard potential, emphasizing the need for ongoing monitoring and maintenance to ensure its structural integrity and safety. With a moderate risk assessment rating of 3, it is evident that the authorities are actively engaged in risk management measures to safeguard the reservoir and surrounding areas from potential threats.
The presence of uncontrolled spillways and a maximum discharge capacity of 70 cubic feet per second highlights the importance of effective water release mechanisms to prevent flooding and ensure optimal water flow management. As a vital water resource in the region, Aepoalua Reservoir stands as a testament to the significance of sustainable water management practices in mitigating the impacts of climate change and preserving water resources for future generations.
Year Completed |
1915 |
Dam Length |
435 |
Dam Height |
33 |
River Or Stream |
AEPO GULCH |
Primary Dam Type |
Earth |
Surface Area |
7.2 |
Hydraulic Height |
31 |
Drainage Area |
0.08 |
Nid Storage |
131 |
Structural Height |
35 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sf Wailua River Nr Lihue
|
173cfs |
Waimea River Nr Waimea
|
295cfs |
Eb Of Nf Wailua River Nr Lihue
|
39cfs |
Left Branch Opaekaa Str Nr Kapaa
|
2cfs |
Waialae Str At Alt 3
|
34cfs |
Wainiha River Nr Hanalei
|
178cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Area Campgrounds
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Salt Pond Beach - Kauai
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Hanamaulu Beach Park - Kauai
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Lucy Wright Beach Park - Kauai
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Aepoalua Reservoir